My Abysinnian cat has advanced stage patella luxation which is probably arthritic now as well. Her movement has been curtailed and she limps with her hind legs. My vet prescribed Body Sore and Tendon/Ligament herbal supplements from Dr. Xie Jin Tang. It's been a week and I don't see much improvement, in fact, she seems slightly more stiff. Does it take more time to see results?